Plant sheath



FIG. 1 is a front perspective view of the plant sheath;

FIG. 2 is a front perspective view of the plant sheath in an open position;

FIG. 3 is a top elevated view of the plant sheath;

FIG. 4 is a bottom elevated view of the plant sheath;

FIG. 5 is a left end view of the plant sheath;

FIG. 6 is a right end view of the plant sheath;

FIG. 7 is a right end view of the plant sheath in an open position;

FIG. 8 is a top plan view of the plant sheath; and,

FIG. 9 is a bottom plan view of the plant sheath. 

CLAIM The ornamental design for a plant sheath, as shown and described. 